Symmetricom -USED- 090-58021-01 INPUT/OUTPUT CLOCK CDBrand: Symmetricom Model: 090 58021 01 Description: Symmetricom 090 58021 01 INPUT OUTPUT CLOCK CD Part Condition Used WORKS AS EXPECTED 30 Day Money Back Guarantee With Seller Paid Return Shipping Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the sellers listing for full details and