Adalah produk penerus dari varian RB1100 series yang menggunakan spesifikasi hardware yang lebih baru yaitu processor Alpine AL21400 1.4GHz Quad Core , 1GB RAM , routerOS level 6, dan casing 1U rackmount.

| Spesifikasi RB1100x4 | |
| Product Code | RB1100x4 |
| Architecture | ARM |
| CPU | Alpine 1.4GHz |
| Current Monitor | Yes |
| Main Storage/NAND | 128MB |
| RAM | 1GB |
| SFP Ports | 0 |
| LAN Ports | 13 |
| Gigabit | Yes |
| Switch Chip | 2 |
| MiniPCI | 0 |
| Integrated Wireless | No |
| MiniPCIe | 0 |
| SIM Card Slots | No |
| USB | No |
| Memory Cards | Yes |
| Memory Card Type | microSD |
| Power Jack | 110-240V Dual |
| 802.3af Support | Yes |
| POE Input | 20-57V |
| POE Output | No |
| Serial Port | DB9/RS232 |
| Voltage Monitor | Yes |
| Temperature Sensor | Yes |
| Dimentions | 1U |
| Operating System | RouterOS |
| Temperature Range | -40C ..+70C |
| RouterOS License | Level6 |