Where can I get Windows* XP drivers for the PRO/100 EISA and PCI Adapters? No Windows* XP drivers are available for the obsolete Intel® PRO/100 EISA or PCI adapters. The original PRO/100 PCI adapter was discontinued in early 1996 and should not be confused with the later PRO/100 PCI adapters, such as the PRO/100B, PRO/100+, or PRO/100 S families of adapters. The original PRO/100 PCI adapter can be identified by its large size (approximately 6¾ inches long and 4¼ inches high), its part number (351361-xxx) and the presence of 4 LEDs on the mounting bracket.