(4) 4MB 30pin 2-chip gold-pin SIMM 4x8 without parity Please see description below for compatibility with your ASR-10 100% Compatible with Lifetime Warranty Manufactured by Keystron, LLC Keystron is a registered trademark of Keystron, LLC Compatible with ENSONIQ Emu E-mu ASR of following serial numbers: ASR-10 - 20677 ASR- 1O Rack - 014567 ASR-10 w/SCSI - 13126 ASR-88 - all units Note: It is possible that your unit has a different rev board than these cutoffs suggest, due to a repair or other circumstance. Be sure to check it against the diagrams in auction photos to confirm which rev board you have. If you do have earlier versions of ASR10, please use other listings for 8-chips SIMMs.