Enter your email address below and we will notify you when this product becomes available

To top

APC Back-UPS ES 550VA Desktop UPS

Free shipping & free returns

Product #U40018
Back Features

This 120-volt, eight-outlet battery backup and uninterruptible power supply (UPS) provide emergency power through short and medium-length power outages. Battery backup features a 330-watt/550-VA output capacity. USB connection lets you use your PC to access additional power protection and management features. Disconnected battery notifier warns you when a battery is not available to provide backup power. Dataline surge protector guards your connected equipment from power surges on the data lines. Wiring fault LED indicator informs you of potentially dangerous wiring problems in the wall circuit. Plus, this battery backup protects electronics from surges and spikes without reducing the battery power that's used to run primary electronics during an outage.

Return & exchange information

We have extended our return policy for the holidays. All purchases made between 11/1/15 – 12/25/15 will have until January 15th, 2016 to return.

Back Specs

Product specifications

Backup/Run Time (Full Load)

3.30 Minute

Backup/Run Time (Half Load)

13.50 Minute

Battery Characteristics

Spill-proof, Maintenance-free

Load Capacity (Watt)

330 W

Maximum Battery Recharge Time

24 Hour

Input Voltage

110 V AC

Output Voltage

120 V AC



Plug/Connector Type

NEMA 5-15P

Form Factor




Packaged Quantity

1 Each

Package Contents

  • Back-UPS ES 550VA Desktop UPS
  • CD with software
  • USB cable
  • User Manual

Limited Warranty

3 Year


13 lb








American Power Conversion Corp

Manufacturer Website Address


Manufacturer Part Number


Return & exchange information

We have extended our return policy for the holidays. All purchases made between 11/1/15 – 12/25/15 will have until January 15th, 2016 to return.

Back Special offers
  • Free shipping & free returns
Back Reviews

Prices, specifications, availability and terms of offers may change without notice. Price protection, price matching or price guarantees do not apply to Intra-day, Daily Deals or limited-time promotions. Quantity limits may apply to orders, including orders for discounted and promotional items. Despite our best efforts, a small number of items may contain pricing, typography, or photography errors. Correct prices and promotions are validated at the time your order is placed. These terms apply only to products sold by HP.com; reseller offers may vary. Items sold by the HP.com are not for immediate resale. Orders that do not comply with HP.com terms, conditions, and limitations may be cancelled.

HP’s MSRP is subject to discount. HP’s MSRP price is shown as either a stand-alone price or as a strike-through price with a discounted or promotional price also listed. Discounted or promotional pricing is indicated by the presence of an additional higher MSRP strike-through price.

In-home warranty is available only on select customizable HP desktop PCs. Need for in-home service is determined by HP support representative. Customer may be required to run system self-test programs or correct reported faults by following advice given over phone. On-site services provided only if issue can't be corrected remotely. Service not available holidays and weekends.

HP will transfer your name and address information, IP address, products ordered and associated costs and other personal information related to processing your application to Bill Me Later®. Bill Me Later will use that data under its privacy policy.

Ultrabook, Celeron, Celeron Inside, Core Inside, Intel, Intel Logo, Intel Atom, Intel Atom Inside, Intel Core, Intel Inside, Intel Inside Logo, Intel vPro, Itanium, Itanium Inside, Pentium, Pentium Inside, vPro Inside, Xeon, and Xeon Inside are trademarks of Intel Corporation in the U.S. and/or other countries.

Microsoft Windows 10: Not all features are available in all editions or versions of Windows 10. Systems may require upgraded and/or separately purchased hardware, drivers, software or BIOS update to take full advantage of Windows 10 functionality. Windows 10 is automatically updated, which is always enabled. ISP fees may apply and additional requirements may apply over time for updates. See http://www.microsoft.com.