This is the driver and installation manual for the CompUSA PCMCIA 10/100 Ethernet Notebook Adapter - 32bit. This model was available in about 2005 for about $20. It has no external markings indicating a manufacturer or model number, only a CompUSA sticker with the name above, and a MAC Address sticker on the back. The SKU number of this item is 312399. The model number near the UPC code is CB-LAN100, and the UPC is 841818002342.