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Compact desktop UPS unit with textured black finish, multiple outlets and USB port

Tripp Lite

Tripp Lite 550VA 300W Desktop UPS 120V USB RJ11

SKU CH-4G1Y-7AF46

Desktop UPS with 550 VA capacity and 300 W output protects computers, modems and phones, providing 9 minutes runtime at 150 W load via USB and RJ11 connections

  • Line-interactive AVR stabilises voltage without using battery power
  • 550 VA / 300 W capacity backs desktop PCs and networking gear
  • 9 minutes runtime at 150 W half load saves work during outages
  • Surge-only outlets protect peripherals without draining backup runtime
  • USB HID port enables automatic shutdown via OS or PowerAlert software

What this UPS does

The Tripp Lite 550VA line-interactive UPS supplies battery backup and surge protection for desktop computers, networking gear and phone or DSL lines. It delivers 300 W of output power and uses automatic voltage regulation to correct brownouts and overvoltages without draining the battery. The unit is designed for home-office and small-business workstations that need graceful shutdown during short outages.

Installation and common issues

Connect the UPS to a 120 V 50/60 Hz wall outlet, then plug critical devices into the battery-backup sockets and peripherals into the surge-only sockets. Use the HID-compliant USB port with the operating system’s built-in power management or the free PowerAlert software for monitoring and automated shutdown. The RJ11 jack protects a single phone, fax or DSL line. Overloading the battery-backed outlets will shorten runtime and may trip the internal breaker.

Runtime and interface limits

At a 150 W load the battery provides approximately 9 minutes of runtime, which is only enough to save work and shut down a typical desktop. The USB link is limited to HID-class communication, so advanced network-management cards are not supported. The 120 V input and output restrict use to North American mains voltages, and the single RJ11 line protects only one telephone or DSL connection.

How it compares

Measured against everything we stock in Uninterruptible Power Supplies (UPS), at today’s prices. Recalculated every night.

Price $81.99
Cheaper than about 93% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameTRIPP LITE

Questions about this item

How can I verify the 550 VA UPS is working correctly after connecting it via USB?

Connect the USB cable to the computer and use the built-in power management or Tripp Lite PowerAlert software to confirm the UPS reports battery status and AVR operation.

What comes in the box and what must I purchase separately for the 120 V desktop UPS?

The UPS unit with USB and RJ11 ports is included; any additional USB or phone cables beyond the supplied ones must be purchased separately.

Which capacity should I choose for a load near 150 W to get the 9 minute half-load runtime?

The 550 VA / 300 W model provides 9 minutes at 150 W half load; select this version when your connected equipment draws approximately 150 W.

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