Cisco Catalyst 4510R+E enterprise modular switch chassis with 10 slots supporting up to 384 ports. This appears to be listed with a service maintenance SKU suffix (9X5X4) whose exact specifications could not be verified.
10-slot modular chassis
Layer 3 switching/routing
8 line-card slots + 2 supervisor engine slots
Support up to 384 ports
Up to 1500W PoE power per slot
1+1 redundant supervisor engine capability
928 Gbps switching capacity
Modular line card support
Cisco IOS XE compatible
Dimensions: 24.35 x 17.31 x 12.50 inches
Operating temp: 0-40°C
Humidity: 10-90% non-condensing
No power supplies included (purchased separately)