Question about Digitus 48,3cm 19inch wall cabinet 16HE SoHoline RAL7035 grey H816mmxW600mmxD450mm with glass door

Upright, yes ;). The real depth of the cabinet for racked devices is <370mm. It fits e.g. the Synology RS1219+ or certain Supermicro servers.

No. The cabinet is not deep enough for that. It is rather intended for communication devices (switches etc.).

Hello. Cabinet depth :450mm. Depth PowerEdge 710: 772mm. Therefore, this is probably a poor fit ....