# CyberPower ST900U Standby UPS System, 900VA/500W, 12 Outlets, 2 USB Charging Ports, Compact

- Category: UPS
- Brand: CyberPower
- Model: CP550SLG
- Part number: CP550SLG/CP550HG
- Price (US): $77.95
- Price last checked: 2026-08-06
- Rating: 4.4/5 from 2699 Amazon reviews
- Warranty: 3 years
- Product page: https://buildmypc.net/component-details/ups/cyberpower-cp550slg-cp550slg-cp550hg/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | CyberPower |
| Model | CP550SLG |
| Capacity (W) | 330 W |
| Capacity (VA) | 550 VA |
| Output Voltage | 120 V |

## Key Features

- 900VA/500W Standby Battery Backup Uninterruptible Power Supply (UPS) System
- 12 NEMA 5-15R OUTLETS: (6) Battery Backup & Surge Protected Outlets and (6) Surge Protected Outlets safeguard home office and entertainment needs, including computers, gaming consoles, and broadband routers.
- ADDITIONAL FEATURES: LED status light indicates Power-On and Wiring Fault, transformer-spaced outlets. 5 ft. cord with NEMA 5-15P plug. (2) USB 2.1A (shared) Charging Ports
- GreenPower UPS High-Efficiency Design: Reduces power consumption by utilizing a compact charger and power inverter to create an ultra-efficient backup power system for home and office use
- 3-YEAR WARRANTY - INCLUDING THE BATTERY, $125,000 Connected Equipment Guarantee and FREE PowerPanel Personal Edition Management Software (Download)

---

Source: BuildMyPC (https://buildmypc.net/) — free PC parts compatibility checker. Prices update daily. As an Amazon Associate, BuildMyPC earns from qualifying purchases.