39M5791-HY - Hypertec Legacy - DDR2

kit - 4 GB: 2 x 2 GB - FB-DIMM 240-pin - 667 MHz / PC2-5300 - Fully Buffered - ECC Chipkill - for Lenovo BladeCenter HS21; HS21 XM; System x34XX; x35XX; x3650; ThinkServer TD100