Category | Description | 4540s | 4540s | 4440s | 4440s/ |
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| (UMA) | (Disc) | (UMA) | 4441s |
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Panel | All display assemblies include 2 wireless local area | √ | √ | √ | √ |
| network (WLAN) antennas |
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| All displays are LED backlit |
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| √ | √ |
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| camera |
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| camera and WWAN |
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| √ | √ | |
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| and WWAN |
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| camera |
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| camera and WWAN |
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Memory | Two | √ | √ | √ | √ |
| module slots supporting up to 8 GB of RAM |
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| Supports | √ | √ | √ | √ |
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| Supports the following configurations: | √ | √ | √ | √ |
| ● 8192 (4096 × 2) |
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| ● 6144 (4096 + 2048) |
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| ● 4096 (2048 × 2) |
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| ● 4096 (4096 × 1) |
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| ● 2048 (2048 × 1) |
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| Brazil |
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| ● 8192 (4096 × 2; dual channel) |
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| ● 4096 (2048 × 2; dual channel) |
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| ● 4096 (4096 × 1) |
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| ● 2048 (2048 × 1) |
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Hard drives | Supports | √ | √ | √ | √ |
| with HP 3D DriveGuard |
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| Supports | √ | √ |
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| DriveGuard |
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| √ | √ | √ | √ | |
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2 Chapter 1 Product description