It seems that the linux-wlan-ng drivers do work w/ the dwl-520 but.....
http://lists.shmoo.com/pipermail/hos...ry/005454.html
I bought 2 of these cards refurbished for short money. ($50 shipped for 2). Probably sent back to D-link by some windows user that couldn't get his mouse clicks in the right sequence and pattern.
This card works just fine under Linux but not with the linux-wlan-ng drivers.
You actually need to upload the firmware on boot everytime and unload the modules before halt/reboot or the card can (will?) lock. You need the hostap driver.
There is a great howto from Andrew Barr here.
You don't need the following link to get the dwl-520E working but it is relevant to linux wireless and the hostap driver.
Linux wireless
*Note use dhclient instead of dhcpcd. apt-get install dhcp3-client
*Note the hostap driver also works with the dwl-650.
It seems that the linux-wlan-ng drivers do work w/ the dwl-520 but.....
http://lists.shmoo.com/pipermail/hos...ry/005454.html

IBM 4262 SYSTEM x3200 Tower - HDD Wiped, NO OS
$80.00
IBM QRadar xx29 2x Xeon E5-2650v4 2x 900W PSU M5120 12x 3.5" Bay Server No RAM
$149.99
Lot of 2 IBM blade center Type H chassis 8852
$559.00
IBM System x3755 M3 2U Rackmount Server – No Drives or Trays
$150.00
IBM POWER8 8286-42A S824 16-Core 128GB RAM 4.8TB SAS Fedora Linux Server PowerVM
$750.00
IBM Power S822 POWER8 1x CPU 32GB DDR4 RAM 2U Rack Server No HDD.
$629.99
IBM Power S922 9009-22A Power9 DDR4 10GbE 6X SFF Barebone Server
$999.95
IBM SYSTEM X3500 M3 SERVER 7380AC1 TOWER Server XEON E5620 8GB RAID SEE NOTES
$107.56
IBM 7915 AC1 M4 E27R704 Server Intel 2650V2 32GB RAM NO HDD w/ 2x 750w PSU
$200.00
IBM QRadar xx29 M4 2x Xeon E5-2670 2.6GHz 16-Cores | 64gb | M5120 RAID
$349.99