Nortel DS1405a01 BayStack/Ethernet Routing Switch networking and Meridian/DMS-100 telephony Power Supply

The Nortel DS1405A01, also known as the Passport 8001PS, is a power supply unit for the Passport/Accelar 8000-series chassis, alongside which the 8148TX and 8672 ATM modules covered elsewhere in this listing also fit. The Passport 8000 range, later rebranded Accelar and eventually folded into the Ethernet Routing Switch 8600 family, is a modular routing-switch chassis used as a core or distribution layer platform in enterprise and carrier networks; each chassis typically carries one or two hot-swappable PSUs feeding the backplane and installed modules. A working PSU is essential to chassis operation, and genuine spares are a routine requirement both for maintaining redundancy and for replacing a failed unit outright. Confirm the exact chassis model and voltage/wattage rating your installation needs before ordering, since the 8000-series PSU family spans several variants. Tech-Star (UK-based, shipped worldwide) stocks Nortel Passport/Accelar components to support ongoing network maintenance projects.