| Alarm(s) | Audible |
| Automatic Voltage Regulation (AVR) | Yes |
| Backup Time at Full Load | 330 Watts @ 3.2 minutes |
| Backup Time at Half Load | 13.1 minutes @ 165 Watts |
| Battery Recharge Time [Nom] | 24.0 h |
| Color(s) | Black |
| Compliance, Standards | FCC Part 15 Class B, FCC Part 68, NOM, TUV, UL 497A, UL 497B |
| Connected Equipment Guarantee/Warranty | Lifetime $75, 000 |
| Connector/Port/Interface | RJ11, USB |
| Cord Length [Nom] | 6 ft |
| Depth [Nom] | 7 in |
| Diagnostics/Alarm/Status Light | Alarm, LED |
| Disclaimer Statement(s) | Run Time based on a load of 165 watts. |
| Emergency Power Off (EPO) | No |
| Global Product Type | Backup Systems |
| Height [Nom] | 3.3 in |
| Input Frequency | 60 Hz |
| Jacks | RJ11 |
| Joules Of Surge Protection [Nom] | 365 J |
| Lines [Nom] | 1 |
| Model Name/Number | Back-UPS ES 550 |
| Multimedia Protection | Tel/Modem |
| Number of Outlets [Nom] | 8 |
| Number of Outlets/Type | 4 Surge Only, 4 UPS/Surge |
| Post-Consumer Recycled Content Percent [Nom] | 0 % |
| Pre-Consumer Recycled Content Percent [Nom] | 0 % |
| Protection Type | DSL, Fax, Modem, Phone, Power |
| React Time | Instantaneous |
| Run Time | 13 minutes |
| System VA [Nom] | 550 VA |
| Telephone/Internet Protection | DSL, Fax, Phone |
| Total Recycled Content Percent [Nom] | 0 % |
| Weight [Nom] | 13.00 lbs. |
| Width [Nom] | 12 in |