The Cisco MEM-C5K-SUP3-UPGD is available from Calhoun Technologies. Calhoun Tech can help your company save up to 80% on IT Hardware. Manufacturer: Cisco Part Number: MEM-C5K-SUP3-UPGD Details: Cisco MEM-C5K-SUP3-UPGD 64MB 2 x 32MB Parity FPM DRAM 72-pin