Epson CEPS-003 DB9 to DB25 Null Modem Cable
Overview
The Epson CEPS-003 is a 6-foot null modem cable that connects DB9 female to DB25 male connectors, solving the serial port mismatch problem in legacy and hybrid printer environments. This cable crosses transmit and receive lines internally — eliminating the need for external serial converters when your device has a DB9 port but your printer expects DB25. Common in point-of-sale systems, warehouse label printers, and enterprise receipt-printing networks where serial remains the standard.
Compatibility
Works with Epson printers and compatible devices equipped with DB9 or DB25 serial ports. Verify your printer's port configuration before ordering — a quick check of the connector type (count the pins: 9 = DB9, 25 = DB25) prevents installation delays. The null modem cross-wiring means it handles handshake line swaps automatically; no additional configuration required if your hardware recognizes the serial standard.
Installation Notes
The 6-foot length covers most point-of-sale and warehouse printer mounting distances without signal degradation on short runs under 10 feet. Ensure connectors seat fully into both ports — DB9 and DB25 sockets can feel loose if not fully mated. No external power required; serial cables operate passively. Keep away from high-voltage power lines and noisy electrical equipment to avoid occasional framing errors on long shifts.
