Are Dell Universal and Logitech Unifying receivers the same thing?

Preamble

As I noted in Dell mice and keyboards, in the past some Dell keyboards and mice come with receivers that use the orange Logitech Unifying logo, rather than the blue Dell Universal logo…

From DELL KM636 UNBOXING Wireless Keyboard & Mouse (580-ADTY) (5WH32) at 0:46

Dell mice and keyboards

Preamble

The collection continues…

Just to recap, this crazy collection of mice and keyboards is derived from the need to use only a single USB port on a Jetson Nano (see Jetson Nano – basic specs and Logitech Unifying receiver – originals, fakes and much much more). Hence the requirement for a combined keyboard and mouse USB wireless dongle.

Dell WK636p keyboard dongle

Preamble

I found a Dell WK636p keyboard. No mouse was with it, and sod’s law meant that the USB dongle was also missing…

Also, is the Dell Universal Receiver compatible with Ubuntu, and furthermore is it compatible with the Jetson Nano (i.e. drivers for ARM)?

MacBook Pro (Santa Rosa) and a Dell E1912H

Preamble

The Dell E1912H requires a resolution of 1366×768 @ 60 Hz (as shown in the monitor’s own message when the host tried to sync an oversized resolution):

Fixing broken Dell Laptop power supplies

Preamble

Following on from Dell M6700 or M6800, there are a lot of laptops sold without power supplies or chargers. This made me wonder:

• Is it because they blow often?
• Why is that?
• Are they plugged into power hungry docks
• Are they underrated?

See M6600 Owner’s Review – Warning – Large pics – Personal Opinions for an interesting break down of the power supplies and current draw.

Anyway, I thought that instead of buying an expensive new, or second hand, supply (the 240 W or 330W can go for up to £100+), is it possible to to fix them? Is there a common failure mode? A recurring point of failure?

Dell M6700 or M6800

Preamble

I want one, but which one?

Or how about the M6600, which is between 30-60 % cheaper and only marginally slower..?

Or the M6500, slower still, but even cheaper, and there are some are quad core models, although many M6500 are only dual core…

Repairing a dead Dell 3008WFP

Preamble

I purchased off eBay a Dell 3008WFP monitor, a spare screen, control module and power supply unit, along which some spare cables and switches, for around £600 in 2012. It was working fine, although it had obviously been repaired, as the vendor was a Dell repairs department. I noticed that a hot of heat was generated from the rear top vent of the monitor when it was on. Then after a few months, one day, the monitor refused to turn on. The problem seems to be the infamous diode D22.