Category | Description | 4540s | 4540s | 4440s | 4440s/ |
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| (UMA) | (Disc) | (UMA) | 4441s |
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| (Disc) |
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| DRDVD Windows 7 | √ | √ | √ | √ |
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| DRDVD Windows 8 | √ | √ | √ | √ |
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| Windows 8 Professional 64 | √ | √ | √ | √ |
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| Windows XP Professional (Discrete graphic drive | √ | √ | √ | √ |
| not supported) |
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| Windows 7 Home Basic 32 | √ | √ | √ | √ |
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| Windows 7 Home Premium 32 | √ | √ | √ | √ |
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| Windows 7 Professional 32 | √ | √ | √ | √ |
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| Certified: |
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| Microsoft WHQL | √ | √ | √ | √ |
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Serviceability |
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| AC adapter | √ | √ | √ | √ |
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| Battery (system) | √ | √ | √ | √ |
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| Hard drive | √ | √ | √ | √ |
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| Memory module | √ | √ | √ | √ |
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| Optical drive | √ | √ | √ | √ |
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| WLAN module | √ | √ | √ | √ |
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| WWAN module | √ |
| √ |
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| Keyboard | √ | √ | √ | √ |
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8 Chapter 1 Product description