The Allied Telesis AT-MCF2000M is a modular media converter chassis supporting multiple conversion modules for fiber-to-copper and copper-to-fiber bridging in enterprise networks. The MCF2000 series accommodates up to four hot-swappable conversion modules, enabling flexible topology transitions across different media types and distances. Common configurations include Fast Ethernet and Gigabit Ethernet conversions, supporting standard 100Base-FX, 1000Base-SX, 1000Base-LX, and copper RJ-45 connections. The chassis provides redundant AC power options and compact 1U or desktop form factors depending on configuration. Typical applications include legacy network migration, multimode-to-singlemode transitions, and extending connectivity across facilities where mixed cabling infrastructures exist. Compatible with standard 19-inch rack installations and management-capable for SNMP monitoring. This refurbished unit has been tested and guaranteed by G5 Network Group; available via quote.