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| PartNumber | AQD-SD4U4GN21-SG | AQD-SD4U4GN21-HG | AQD-SD4U4GN24-HP |
| Description | Memory Modules 4G SO-DDR4-2133 512X8 1.2V SAM | Memory Modules 4G SO-DDR4-2133 512X8 1.2V HYX | Memory Modules 4GB DDR4 2400 SO-Dimm HYX |
| Manufacturer | Advantech | Advantech | Advantech |
| Product Category | Memory Modules | Memory Modules | Memory Modules |
| Memory Size | 4 GB | 4 GB | - |
| Memory Type | DDR4 | DDR4 | - |
| Brand | Advantech | Advantech | Advantech |
| Product Type | Memory Modules | Memory Modules | Memory Modules |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |