D-Link DES-1210-28 rev A1

Specifications

 * Processor: Marvell Prestera (likely either 98DX1022 or 98DX2122) (ARMv5)
 * Flash/RAM: 16MB (SPI) Flash, 64MB RAM (DDR2)
 * 12.8Gbps switching capacity, Rack mountable (1U, 19")
 * 24x Fast Ethernet ports, 4x Gbe (RJ-45) ports 2 shared with SFP slots

Links of Interest
Datasheet