The Rocelco black DADRB-40-ACUSB Height Adjustable Sit to Standing Desk Riser and Converter Bundle comes with four AC outlets, one USB-C, two USB-A charging ports, a cable management channel and a R DM2 Dual Monitor Mount which allows you to enjoy the benefits of a standing desk to get you through the work day . Now you can sit part of the day or stand to take advantage of all the health benefits that come with standing and moving around. With the 40" wide R DADRB-40-ACUSB, you and your associates will become healthier and more productive. It fits over your current desk with no need to buy additional furniture. With its spacious 40" W x 23.6" D work surface, you can hold up to 2 large monitors, a laptop, and more. It also includes an retractable keyboard tray that measures 25.5" W x 11.25" D that is an ergonomic 4.5" below the desktop. EVR Enhanced Vertical Range rises up to 20" and down to 5", to optimize the ergonomic work position for people of all heights. Straight up and down motion minimizes required depth (23.25"). Steel frame and dual gas piston assist allows you to easily raise and lower up to 40lbs. Grommet hole allows you to route cables or add an optional single or dual monitor arm such as the Rocelco DM2 or MA2.  Cable management channel at back routes your wires for tidy installation. AC-USB strip with 4 AC, 1 USB-C and 2 USB-A outlets, is mounted at back to power/charge all your devices. Fully assembled and ready to go! The included DMS Dual Monitor Stand is 30" wide, so it can hold two standard size or one large monitor, and includes 4 UL approved AC outlets plus two USB 2.0 charging ports. The Rocelco DMS not only raises your monitors to a comfortable ergonomic height, with enough outlets to power and charge all your devices, but it also keeps your workspace organized and clutter-free with space to store your keyboard and mouse underneath.

• Standing Desk Converter Bundle includes 40" desk riser (R DADRB-40-ACUSB) and Dual Monitor Arm (R DM2) for easy ergonomic positioning of 13"-27" flat panel monitors to optimize viewing comfort. R DM2 includes a grommet mount to install.
• Large worksurface - 40" by 23.5" desktop workstation can hold up to two 32" monitors, while 25.5" by 11.25" retractable keyboard tray can hold a laptop if needed and keep arms in ergonomic position to prevent strain while sitting or standing.
• Quick, easy and stable height adjustment - Sturdy metal frame with easy-grip side handle and gas piston assist, can raise and lower up to 40 pounds from 5.3" up to 20.6" above desktop. Straight up and down motion minimizes required depth (23.25").
• AC-USB Strip mounted at back includes four AC Outlets, one USB-C and two USB-A charging ports to power and charge all your devices along with a cable management system to tame your wires and keep everything neat.
• Minimal assembly -monitor arm attach in minutes and you're ready to go. One Year Warranty and we're always here to help. Licensed under U.S. Patent Nos. 9,113,703, 9,277,809, 9,554,644, 9,924,793 and other pending/issued U.S. and foreign patents

• Adjustability: 5-20"
• Assembly Required: Yes