C4KX-PWR-750AC-R Cisco Showing the single result Sale! Cisco 750W AC FRONT TO BACK COOLING POWER SUPPLY FOR CATALYST 4500-X C4KX-PWR-750AC-R $2,739.56 Original price was: $2,739.56.$1,672.73Current price is: $1,672.73. Add to cart Add to wishlist