Yes, it works on L50.
All numbers are exacts and mathc with the labels.
Sometimes the lcd screen lamps are on, sometimes not. After I read that, I made a 720k floppy extracting the files with Winzip on my desktop at office, I tested it with 'F12' on my Lib50. Tried with a 3com NIC, a Viking modem, and a webgear wireless lan card. Or run Linux. Now, the applications are mad until the modem has made a network connection, but after that all is well.