Xerox N32 N40 140E37161A Fast Ethernet PWB Network Card SMSC LAN91C100FD

Xerox N32 N40 140E37161A Fast Ethernet PWB Network Card SMSC LAN91C100FD

The Xerox 140E37161A is a Fast Ethernet printed wiring board (PWB) expansion module designed for the Xerox N32 and N40 laser printers. It provides 10BaseT and 100BaseTX network connectivity, allowing these printers to connect directly to an Ethernet LAN. The board is silk-screened "140E37161A FAST ENET PHASE1" and uses the SMSC LAN91C100FD (FEAST) Ethernet controller.

Specifications & What's Included

• Part Number: 140E37161A
• Board Designation: FAST ENET PHASE1
• Compatible Models: Xerox N32, Xerox N40
• Network Standard: 10BaseT / 100BaseTX Fast Ethernet
• Network Connector: RJ45 (visible on front bracket)
• Front Panel Indicators: 10 link LED, 100 ACT LED
• Main Controller Chipset: SMSC LAN91C100FD (FEAST — LAN91C100FDQFP)
• Form Factor: Printer expansion module / PWB card with metal bracket
• Card Only — no additional cables or accessories included

Applications

The Xerox N32 and N40 were high-volume workgroup laser printers introduced in the mid-to-late 1990s, capable of 32 and 40 pages per minute respectively. Many configurations shipped without a built-in Ethernet port, relying on an optional network expansion module like this PWB to enable direct LAN connectivity. This type of internal Fast Ethernet module slots into the printer's expansion bay and provides a permanent, integrated network connection — eliminating the need for an external print server. Shops maintaining N32 or N40 printers today still seek these cards to restore or add network functionality to an existing unit. The SMSC LAN91C100FD controller was a widely used 10/100 Ethernet MAC+PHY single-chip solution common in embedded and peripheral applications of that era.