I needed a 24 port switch mounted in a tight space against a wall recently and got this useful bracket to do the job.
The StarTech 19-Inch Steel Vertical Wall Mount Equipment Rack Bracket (RK119WALLV) allows network devices, power strips and patch panels etc to be mounted vertically against a wall to save space.
It can also be used horizontally under a desk too like this.
Perfect for SoHo (small office, home office) environments, the wallmount bracket offers space-saving installation for environments lacking the footprint space for a full size server equipment rack. Suitable for mounting on virtually any wall/ceiling surface (e.g. drywall), the bracket mounting holes (used to mount to a wall or the desk underside) are positioned at exactly 16in apart, matching standard construction framework. Constructed to EIA-310 19in rack standards, the wallmount bracket features a sturdy steel design and is backed by StarTech.com’s Lifetime Warranty. Need more storage space? StarTech.com also offers a 2U 19in Wallmount Bracket, a 3U 19in Wallmount Bracket and a 4U 19in Wallmount Bracket.
Available in 1U, 2U, 3U and 4U versions from Amazon.