Compare Quectel Wireless EC21-A Vs Sierra Wireless MC7750
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| Model | EC21-A | MC7750 |
| Price | $50 | $35.99 |
| Buy | ||
| Manufacturer | Quectel Wireless | Sierra Wireless |
| Form Factor | LCC Castellation | Mini PCI Express |
| Dimensions | 39 x 32 x 24 mm | 51 x 30 x 4.5 mm |
| Surface Area | 1248 sq. mm | 1530 sq. mm |
| Volume | 29952 cubic mm | 6885 cubic mm |
| Technologies | UMTS, HSDPA, HSPA+, LTE | 1xRTT, EVDO Rev A, LTE |
| Max. Upload Speed | 5 Mbps | 50 Mbps |
| Max. Download Speed | 10 Mbps | 100 Mbps |
| GSM Bands | N/A | N/A |
| WCDMA Bands | B2 (1900 PCS), B4 (AWS-1700), B5 (850) | N/A |
| LTE Bands | B2 (1900 PCS), B4 (AWS-1), B12 (700 a) | B13 (700 c) |
| EVDO Bands | N/A | 800/1900 MHz |
| 1xRTT Bands | N/A | 800/1900 MHz |
| Interfaces | ADC, GPIO, I2C, SPI, UART, USB | ADC, GPIO, SDIO, SIM, SPI, UART, USB |
| GPS Support | Yes | Yes |
| GNSS Support | Yes | No |
| Voice Support | Yes, PCM | No |
| Automotive Support | No | No |
| Temperature | -40 C to 85 C | -30 C to 60 C |
| Carrier Approvals | AT&T, Rogers, T-Mobile (USA), Telus | Verizon Wireless |
| Certifications | FCC, IC, PTCRB | FCC, IC, NCC (Taiwan) |