Depth adapter StarTech.com RDA2U

The StarTech.com Depth adapter RDA2U is a 2U rail depth extender/adapter kit that lets you recess or extend mounted equipment by up to 4 inches (102 mm) to accommodate different rack depths. The kit is TAA compliant for US federal purchases and includes two adapters with a black finish. It is designed for mounting in server racks to increase flexibility when integrating equipment with varying chassis depths.

Advantages

This rail depth adapter kit provides a simple way to adjust your rack mounting depth without buying a new cabinet. It supports different installation types and weight loads — up to 9 kg (20 lb) total in two-post setups and up to 59 kg (130 lb) total in four-post setups — and helps manage cable routing by allowing equipment to be mounted forward or recessed relative to the rack rails. The kit includes compatible 10-32 x 5/8 screws for secure installation and is backed by a 2-year warranty with lifetime North American technical support.

Suitable for

• Adjusting mounting depth for 2U servers and network devices
• Consolidating equipment with varying chassis depths into a single rack
• Reducing cable protrusion and minimizing cable strain
• Government or commercial environments requiring TAA-compliant hardware

Key specifications

• Model: StarTech.com RDA2U
• Type: 2U rail depth adapter / extender kit
• Adjustment range: up to 4 inches (approx. 102 mm)
• Included adapters: 2
• Weight capacity: 9 kg (20 lb) total in 2-post installs; 59 kg (130 lb) total in 4-post installs
• Dimensions (each adapter): 90 mm (W) x 113 mm (D) x 25 mm (H)
• Screws included: 10-32 x 5/8
• Compliance: TAA
• Warranty: 2 years; lifetime North American technical support

How to use

Install the adapters in place of or in front of the rack mounting rails to extend or recess equipment by up to four inches. Use the supplied 10-32 x 5/8 screws to secure the adapters to the rack and then mount the 2U equipment to the adapters. For two-post installations, verify the reduced weight capacity and limit mounted load accordingly; for four-post installations, attach the adapters to the front and rear posts as required to achieve the desired depth. Confirm all fasteners are tightened and cable routing is arranged to avoid strain.

Usage recommendations

For reliable operation, verify device weight and distribution before installation and follow rack manufacturer guidelines. Use this kit to align high-density cabling and reduce exposed cable strain; avoid exceeding the specified weight limits for two-post or four-post configurations.