Product Details Dell 192GB (6 x 32GB) DDR3-1066 MHz PC3-8500R ECC Registered Server Memory Upgrade Kit Quad Rank 4Rx4 Compatible with Dell R410 R610 R510 R320 R420 R520 R620 R720 R720xd R415 R515 R715 R810 R815 R910 T410 T420 T610 T620 M420 M620 M820 C6100 C6220 II R920 R820 M910 T7600 T7610 R7610 R420XR M520 M610 M610X R5500 T320 C8220 C8220x