| Product type | Notebook computer |
| Product category | A | B |
| Manufacturer name, address | Acer Italy s.r.l, Via Lepetit, 40, 20020 Lainate (MI) Italy |
| Product model number | Extensa 2511; TravelMate P257-M | Extensa 2511G; TravelMate P257-MG |
| Year of manufacture | 2015 |
| E_TEC allowance with capability adjustments when discrete graphics cards are disabled (from 1 July 2014) | 40.8 kWh/year | 52.8 kWh/year |
| E_TEC allowance with capability adjustments when discrete graphics cards are enabled (from 1 July 2014) | Not applicable | 64.8 kWh/year |
| E_TEC allowance with capability adjustments when discrete graphics cards are disabled (from 1 January 2016) | 31.8 kWh/year | 40.8 kWh/year |
| E_TEC allowance with capability adjustments when discrete graphics cards are enabled (from 1 January 2016) | Not applicable | 47.8 kWh/year |
| Whether all discrete graphics card are enabled during the test | Not applicable | No |
| Whether switchable graphics mode with UMA is driving the display during the test | Not applicable | Yes |
| E_TEC of highest power-demanding configuration | 20.7 kWh/year | 19.93 kWh/year |
| Idle state power demand | 7.28 Watt | 6.96 Watt |
| Sleep mode power demand | 0.67 Watt | 0.68 Watt |
| Sleep mode with WOL enabled power demand | Not applicable | Not applicable |
| Off mode power demand | 0.19 Watt | 0.2 Watt |
| Off mode with WOL enabled power demand | Not applicable | Not applicable |
| Maximum power demand | Not applicable | Not applicable |
| Internal power supply (IPS) efficiency at 10 %, 20 %, 50 % and 100 % of rated output power | Not applicable | Not applicable |
| External power supply's (EPS) average active efficiency | 88.20% | 89.01% |
| Noise levels (the declared A-weighted sound power level, L_WAd ) of idle mode | 3.2 B | 3.2 B |
| Noise levels (the declared A-weighted sound power level, L_WAd ) of "HDD random seek" mode | 3.2 B | 3.2 B |
| Minimum number of loading cycles that the batteries can withstand | 400 cycles | 400 cycles |
| Configuration of memory | 2~ 16 GB | 2~ 16 GB |
| Configuration of internal storage | 1 piece | 1 piece |
| Configuration of discrete television tuner | 0 piece | 0 piece |
| Configuration of discrete audio card | 0 piece | 0 piece |
| Configuration of discrete graphics cards | 0 piece | 1 piece |
| Configuration of discrete graphics cards category | Not applicable | G1 |
| The external package of the notebook provides the information, "The battery in this product cannot be easily replaced by users themselves." | Yes | Yes |
| For products with an integrated display, the total content of mercury is | 0 mg | 0 mg |
| Measurement methodology for E_TEC | COMMISSION REGULATION (EU) No 617/2013 of 26 June 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for computers and computer servers: ANNEX II Ecodesign requirements and timetable: 1.3.1. E_TEC formula. |
| Measurement methodology for idle mode | EN 62623:2013 — Desktop and notebook computers — Measurement of energy consumption: 5.2. Test setup; 5.3.4. Measuring long idle mode; 5.7. True RMS watt meter specification; 5.8. True RMS watt meter accuracy; Annex E.2 (informative) ENERGY STAR® V5 compliant testing methodology. |
| Measurement methodology for sleep mode | EN 62623:2013 — Desktop and notebook computers — Measurement of energy consumption: 5.2. Test setup; 5.3.3. Measuring sleep mode; 5.4. Test conditions; 5.7. True RMS watt meter specification; 5.8. True RMS watt meter accuracy. |
| Measurement methodology for off mode | EN 62623:2013 — Desktop and notebook computers— Measurement of energy consumption:5.2. Test setup;5.3.2. Measuring off mode;5.4. Test conditions;5.7. True RMS watt meter specification;5.8. True RMS watt meter accuracy. |
| Measurement methodology for IPS efficiency | Not applicable |
| Measurement methodology for EPS efficiency | EN 50563:2011 External a.c.—d.c. and a.c.—a.c. power supplies — Determination of no-load power and average efficiency of active modes. |
| Measurement methodology for noise level | ECMA-109 2^nd edition (December 1987) Declared Noise Emission Values of Computer and Business Equipment:4. Determination of the declared noise emission values.ECMA-74 11^th edition (December 2010)Measurement of Airborne Noise emitted by Information Technology and Telecommunications Equipment:5. Installation and operating instructions;6. Method for determination of sound power levels of equipment in reverberation test rooms;7. Method for determination of sound power levels of equipment under essentially free-field conditions over a reflecting plane;Annex C.15 Equipment category: personal computers and workstations. |
| Measurement methodology for battery loading cycles | EN 61960:2011 Secondary cells and batteries containing alkaline or other non-acid electrolytes — Secondary lithium cells and batteries for portable applications:7.6.1 General;7.6.3 Endurance in cycles (accelerated test procedure). |
| Sequence of steps for achieving a stable condition with respect to power demand | EN 62623:2013 — Desktop and notebook computers— Measurement of energy consumption:5.2. Test setup;5.3.2. Measuring off mode;5.3.3. Measuring sleep mode;5.3.4. Measuring long idle mode. |
| Description of how sleep mode was selected or programmed | EN 62623:2013 — Desktop and notebook computers— Measurement of energy consumption:5.2. Test setup;5.3.3. Measuring sleep mode. |
| Description of how off mode was selected or programmed | EN 62623:2013 — Desktop and notebook computers— Measurement of energy consumption:5.2. Test setup;5.3.2. Measuring off mode. |
| Sequence of events required to reach the mode where the equipment automatically changes to sleep mode | ENERGY STAR® Program Requirements Product Specification for Computers, Eligibility Criteria Version 6.0, Rev. Oct-2013:1.D.4 Sleep Mode. |
| Sequence of events required to reach the mode where the equipment automatically changes to off mode | Not applicable |
| The duration of idle state condition before the computer automatically reaches sleep mode, or another condition which does not exceed the applicable power demand requirements for sleep mode | 30 minutes |
| The length of time after a period of user inactivity in which the computer automatically reaches a power mode that has a lower power demand requirement than sleep mode | 30 minutes |
| The length of time before the display sleep mode is set to activate after user inactivity | 10 minutes |
| User information on the energy-saving potential of power management functionality | http://www.energystar.gov/index.cfm?c=power_mgt.p_r_power_mgt_users |
| User information on how to enable the power management functionality | http://www.energystar.gov/index.cfm?c=power_mgt.p_r_power_mgt_users |
| Test parameter for ambient temperature | 25 °C |
| Test parameter for test voltage | 230 V |
| Test parameter for frequency | 50 Hz |
| Test parameter for total harmonic distortion of the electricity supply system | 2 % |
| Test parameter for information and documentation on the instrumentation, set-up and circuits used for electrical testing | Equipment setup:1.1 AC Power Source: Chroma model 616021.2 Power-Meter: YOKOGAWA WT2102. Test Condition:2.1 AC Power Source :2.1.1 Input power and frequency: 230Volts (+/-1%)AC, 50Hz (+/-1%)Relative Humidity: 50% |
