Control your laptop, desktop PC or even TV with the Logitech K400 Wireless Keyboard with Built-In Multi-Touch. In addition to providing a quiet typing surface, it is designed to be comfortable to use.
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Sep 02, 2016 The Adesso SlimTouch Desktop Keyboard features an integrated touchpad with GlidePoint touchpad technology. The touchpad can take the place of your mouse, making it easier to control the movement of the cursor in your personal computer. The keyboard features low profile quiet tactile membrane keys and has an elegant sleek design with metallic accent. Redesigned and rechargeable, Magic Trackpad 2 includes a built-in battery and brings Force Touch to the desktop for the first time. Four force sensors underneath the trackpad surface allow you to click anywhere, and detect subtle differences in the amount of pressure you apply, bringing increased functionality to your fingertips and enabling a deeper connection to your content.Magic Trackpad 2.
By using the Logitech unifying receiver, this Logitech wireless touch keyboard has an ample wireless range. It also features a large built-in multi-touch touchpad that allows you to perform a variety of tasks by only using two fingers.
This touchpad keyboard can pinch zoom, pan and scroll, and rotate images easily. It features a long 12-month battery life that will let you do everything you have to do confidently. You can also switch from using the logitech wireless touch keyboard on your computer to your TV quickly and easily. Control your laptop, desktop PC or even TV with the Logitech K400 Wireless Keyboard with Built-In Multi-Touch. In addition to providing a quiet typing surface, it is designed to be comfortable to use. By using the Logitech unifying receiver, this Logitech wireless touch keyboard has an ample wireless range.
It also features a large built-in multi-touch touchpad that allows you to perform a variety of tasks by only using two fingers. This touchpad keyboard can pinch zoom, pan and scroll, and rotate images easily. It features a long 12-month battery life that will let you do everything you have to do confidently. You can also switch from using the logitech wireless touch keyboard on your computer to your TV quickly and easily.Logitech Wireless Touch Keyboard K400 with Built-In Multi-Touch Touchpad, Black:.
10m wireless range. Large 3.5' built-in touchpad. Plug-and-play simplicity.
Logitech unifying receiver. Twelve-month battery life of logitech k400 wireless keyboard.
Comfortable, quiet typing. Multi-touch touchpad can be used to pinch zoom, pan and scroll and rotate with two fingers. Has ample wireless range. Can be used with your laptop, desktop PC or TV. I have had several small wireless keyboards and find that this one is by far the easiest to use.
I use this on a Home Theater PC. I have a regular universal remote for the viewing options, but when I need to enter text, this is great. I used a Dinovo Mini, and it was good, but it was $120. For $35 this keyboard is a great deal.
With the full size keyboard, the touchpad and the physical left and right click buttons, navigating is a breeze. The only improvement I would make is a backlit keyboard. If logitech adds that function to this keyboard and can keep it under $50 I would buy 2 or 3 just in case the first one ever breaks. Note: The touchpad works better if you go into the mouse settings in Windows and change the mouse speed to the fastest possible. I was looking for a way to view videos and pictures on my flat-screen, and this keyboard did the trick, right out of the box.
Set-up was easy, and the mouse-pad was a no-brainer, since I was already using one on my laptop. My laptop came with an HDMI connector, so I hooked it up to the 42' flat-screen, plugged the wireless adapter into a USB port, installed the batteries, and I was ready to go. Movies on demand, family pictures, video clips, even web-surfing is now a matter of sitting on the couch and enjoying the view. I should have bought one of these years ago! The sale price is what finally sold me on this little multi-function wireless keyboard. I have my desktop set up to be a media server, etc. Through my big TV, and I needed a second keyboard so I could control it from my couch.
This guy does the trick! It's roughly 3/4 the size of a normal, full-size keyboard, with about 1/4 of that used by the multi-touch trackpad. It does everything I need; controls all the key parts of Windows I was hoping it would, worked right out of the box (after plugging it in and letting Windows 10 download and install the drivers), can be totally customized (via Logitech's software), comes with a range extender, plays well with other Logitech 'Unified' accessories, and is very quiet! Its not the latest version of this model from Logitech, but for $18, I'm certainly not complaining!
I realize this is an old question and that there are already several answers, but I'm answering anyway for the benefit of anyone who might consider choosing this keyboard based on those answers in the future.The technical answer is yes, this keyboard CAN be used with a desktop computer in place of a regular keyboard BUT there is more to consider than whether or not it is possible.I bought this keyboard to replace a flimsy, unreliable keyboard that came with a new Dell computer. I do use a mouse, but I rarely use the number pad on the right of a standard keyboard, so I thought the touch pad might come in handy and the keys that were missing because of it wouldn't be missed. I ordered it online and didn't realize until after I picked it up and brought it home that there was more to it than the touch pad simply replacing the keys that are typically in that space. I used it for a few days, but I just couldn't work with it so I returned it. The problem I had was that, because of the touch pad, the rest of the keyboard was affected. It's practically impossible to notice from the pictures with this listing because you can't zoom in, but the arrow keys that are typically between the number pad and the rest of the keyboard have actually been moved over to the left and added to the standard keyboard area, specifically, to the bottom two rows of keys, below the enter key and to the right of the space bar.
Because of that, the rest of the keyboard is condensed and some keys that you use every time you type are slightly displaced.the right shift key, for example. I type the way I was taught in high school about a million years ago (without looking at the keyboard as I'm typing), so I found that I was missing keys because they were not where they were supposed to be, and I was wasting an unbelievable amount of time trying to compensate for that. I gave it a fair shot but I quickly learned that I would never be able to adjust to it. So, for someone who 'hunts and pecks' and really wants that touch pad, this might be a good choice for you.
But for anyone who types the way typing was meant to be done and is used to a full-size desktop keyboard, you will most likely find yourself extremely frustrated. I only wish someone had pointed all of this out before I wasted so much time with it.
Logitech Unifying receiver (Older)
Logitech Unifying receiver (Newer)
The Logitech Unifying receiver is an extremely small dedicated USB wireless receiver, based on the nRF24L-family of RF devices,[1] that allows up to six compatible Logitech human interface devices (such as mice, trackballs, trackpads, and keyboards; headphones are not compatible) to be linked to the same computer using 2.4 GHz band radio communication. Receivers that are bundled with a Logitech product are paired with the device at the factory. When purchasing a replacement receiver or connecting multiple devices to one receiver, pairing requires the free-of-charge Logitech Unifying software, available for Microsoft Windows and Mac OS X. Although not compatible with Bluetooth, devices pair to Unifying Receivers in a similar way.[2] Peripherals remain paired, and can then be used on systems not supporting the software. Logitech receivers compatible with the Unifying protocol can be identified by the orange Unifying logo, which distinguishes them from Logitech Nano receivers of similar appearance, which pair in a similar manner but only with a single device, without using the Unifying protocol.
Logitech Unifying receivers (LURs) are often included in wireless Logitech keyboard, mouse, and combo sets, and may be purchased separately. Some Logitech peripherals allow a receiver to be stored inside.[3]
As of October 2019 Logitech Unifying Software for Windows had last been updated, to version 2.50.25, on 30 March 2010.[4]
-
2Security
- 2.1MouseJacking and keyjacking
Compatibility and use[edit]
Each peripheral device can pair to one receiver per profile. While most peripherals only store one profile, newer products such as the Logitech MX Master, MX Anywhere series, and M720 Triathlon allow multiple profiles. These devices can be connected to multiple receivers simultaneously. This allows the use of receivers in several computers, e.g., a desktop and a laptopcomputer, selecting the computer to use by changing profiles on the mouse. This multi-computer function is further augmented by Logitech Flow (software KVM solution) which is similar to Synergy. For devices without multi-computer support, the receiver and input devices can be moved together from one computer to another, maintaining their paired status after being unplugged, as the pairing information is held in the little USB receiver[2]—this is much simpler than transferring the peripheral from one receiver to another by changing the setup in software, and also avoids the limitation to 45 pairings of older devices. This also allows the use of peripherals on computing devices that do not support Unifying Software, e.g. devices supporting USB OTG with operating systems such as Android: first pair to the receiver on a PC or Mac.[5]
Some older Unifying devices limit the number of allowable pairing changes to a maximum of 45 times. Once the 45th connection is made, it is no longer possible to connect such a device to a different receiver. For users who often switch a Unifying device between multiple PCs or laptops with individual receivers, this connection limit can become an issue. For example, a user who frequently switches a mouse between two receivers (e.g. at work and home) will quickly exhaust the limit of available pairing switches.[6] Logitech advises customers with this issue to contact their Customer Care. Newer devices can switch pairings an unlimited number of times.
Pairing software is available from Logitech for Microsoft Windows and Mac OS X. Wireless devices using the Unifying Receiver are supported since Linux 3.2.[7]Software to manage Unifying devices on Linux is available from third party developers, such as Solaar.[8]
Many companies have made peripherals that connect via USB wireless receivers very similar to Logitech's; Logitech devices are incompatible with many of these 'off-brand' receivers[citation needed].
Security[edit]
Several security vulnerabilities of the Logitech Unifying system have been reported in 2016 and 2019,[9] and patches released.
MouseJacking and keyjacking[edit]
MouseJacking, first reported by Bastille Networks, Inc.,[9] is the sending of malicious radio signals (packets) wirelessly to an unsuspecting user through Logitech Unifying wireless technology. The exploit takes advantage of a user's vulnerable Logitech Unifying receiver and unencrypted signals within a range of about 100 meters. Possible exploits include:
- Keystroke injection by either spoofing a paired mouse or keyboard
- Forced pairing
Affected devices and firmware[edit]
Device | USB ID |
---|---|
Unifying receiver | 046d:c52b |
Unifying receiver | 046d:c539 |
Logitech Wireless Gaming Mouse G900 | 046d:c081 |
Logitech Wireless Keyboard K360 | 046d:4004 |
Logitech Multi-Device Wireless Keyboard K370s | 046d:4061 |
Logitech Multi-Device Wireless Keyboard K375s | 046d:4061 |
Logitech Wireless Touch Keyboard K400r | 046d:400e, 046d:4024 |
Logitech Wireless Touch Keyboard K400 Plus | 046d:404d |
Logitech Wireless Solar Keyboard K750 | 046d:4002 |
Logitech Multi-Device Wireless Keyboard K780 | 046d:405b |
Logitech Illuminated Living-Room Keyboard K830 | 046d:404c, 046d:4032 |
Logitech Performance Wireless Keyboard MK850 | 046d:4062 |
Logitech Wireless Mouse M335 | |
Logitech Zone Touch Mouse T400 | 046d:4026 |
Logitech Wireless Mouse M545 | |
Logitech Wireless Mouse M560 | |
Logitech Touch Mouse M600 | 046d:401a |
Logitech Touch Mouse T620 | 046d:4027 |
Logitech Wireless Rechargeable Touchpad T650 | 046d:4101 |
Firmware Version | Vulnerabilities |
---|---|
012.001.00019 | Affected by Bastille security issues #1, #2, #3[10][11] |
012.003.00025 | Affected by Bastille security issues #1, #2, #3[10][11] |
<012.005.00028 | Affected by Bastille security issues #1, #2, #3, #11, #13[10][11] |
012.005.00028 | Affected by Bastille security issues #11, #13[10][11] |
012.007.00029 | Affected by Bastille security issue #13[11] |
Firmware Version | Vulnerabilities |
---|---|
<024.003.00027 | Affected by Bastille security issue #2, #3, #11, #13[10][12] |
024.003.00027 | Affected by Bastille security issue #11, #13[10][12] |
024.005.00029 | Affected by Bastille security issue #13[12] |
Firmware not affected[edit]
Firmware Version | Notes |
---|---|
012.008.00030[11] | |
012.009.00030 | Identical to 012.008.00030 but DFU signed[13] |
Firmware Version | Notes |
---|---|
024.006.00030[12] | |
024.007.00030 | Identical to 024.006.00030 but DFU signed[14] |
Response[edit]
Logitech has released Unifying receiver firmware updates as new exploits were reported.[15][16]
For Linux users there are native options to flash and experiment with such as fwupd and MouseJack.[1] However, with these tools a separate firmware binary is still required. Flashing on a Linux host via a hypervisor such as VirtualBox along with a Windows virtual guest image and the Windows Logitech update executable is also possible. If using a Windows virtual guest, it is recommended to have a second available pointing device while the dongle is being updated. The second pointing device may be needed to allow the user to select and enable pass through of the unifying receiver via the hypervisor task bar after executing the firmware updater so that the device is found and updated.
Updating the Unifying receiver firmware to versions RQR12.08 or greater and RQR24.06 or greater can limit some functionality of certain paired devices unless the devices' firmware is also updated.
![Logitech Logitech](/uploads/1/2/7/6/127658925/337407578.jpg)
Other vulnerabilities[edit]
On July 9, 2019 another set of vulnerabilities was disclosed and documented by a different researcher.[9] A firmware update for Unifying receivers addressing the 'Encryption Key Extraction Through USB' vulnerability (CVE-2019-13054/55) was released on 28 August 2019.[16] Some users reported in 2019 that some Unifying devices are still being sold that are vulnerable to the original 2016 MouseJacking attack.[17]
See also[edit]
References[edit]
- ^ abNewlin, Marc (2016-08-07). 'MouseJack device discovery and research tools'. Retrieved 2019-07-25.
- ^ abGallegos, Gary. 'Gadgets: The Logitech Unifying Receiver (aka 'fake bluetooth')'. Archived from the original on 4 March 2016.
- ^'Logitech Unifying Multi-Connect Utility Setup Instructions'(PDF). Logitech.
- ^'Logitech Unifying Software'. Logitech Support + Download. Retrieved 3 October 2019.
- ^'Android Tablets and Logitech Unifying Devices'. Music Tribe. 7 January 2018.
- ^'Limitations on Unifying devices'. Archived from the original on 2019-10-07. Retrieved 2019-07-25.
- ^Nestor Lopez Casado (2011-09-15). 'HID: Add full support for Logitech Unifying receivers'. Linux kernel. Retrieved 2019-07-25.
- ^Solaar on GitHub
- ^ abcmame82 (2019-07-09). 'Summary / Overview of known Logitech wireless peripheral vulnerabilities'. Retrieved 2019-07-25.
- ^ abcdef'MouseJack Affected Devices'. Bastille Networks. Retrieved 2019-07-25.
- ^ abcdefViredaz, Marc (2017-12-22). 'RQR12.08 Build 0030'. Retrieved 2019-07-25.
- ^ abcdViredaz, Marc (2017-12-22). 'RQR24.06 Build 0030'. Retrieved 2019-07-25.
- ^Viredaz, Marc (2017-12-22). 'RQR12.09 Build 0030'. Retrieved 2019-07-25.
- ^Viredaz, Marc (2017-12-22). 'RQR24.07 Build 0030'. Retrieved 2019-07-25.
- ^LogiLaurie (2016-07-28). 'Logitech Response to Research Findings'. Archived from the original on 2019-07-09. Retrieved 2019-07-25.
- ^ ab'Logitech Unifying Receiver Update'. Logitech Support + Download. 28 August 2019.
- ^Hollister, Sean (2019-07-14). 'Why you should really, really update your Logitech wireless dongle'. The Verge. Retrieved 2020-01-02.
External links[edit]
- Solaar on GitHub - Linux devices manager for the Logitech Unifying Receiver
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Logitech_Unifying_receiver&oldid=933776420'
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