Power Mac 7100, Quadra Centris 650 – Power Supply Strap $10.00 Hold or tie down Power Mac 7100, Quadra Centris 650 - Power Supply Strap quantity Add to cart Add to Quote Continue Shopping Category: Macintosh IIvi, IIvx - Power Mac 7100 - Quadra 650 Description Apple 922-0906, 815-1458. Power Supply Strap, hold down for Power Mac 7100, Quadra/Centris 650