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Huawei E3372h-153 LTE Cat 4 USB Modem

USB-attached LTE mobile broadband stick for a data SIM, regional band-compatible cellular service and a computer or supported router host.

Original local schematic of Huawei E3372h-153 USB modem with SIM and external antenna sockets
UNIQUE LOCAL SVG // REFERENCE SCHEMATIC, NOT TO SCALE

EXACT MODEL / SKU: Huawei E3372h-153 regional hardware variant. E3372h-320, E3372s-153 and carrier-branded devices may differ in bands, software mode, ports or lock status.

Exact specifications and compatibility

Modem standardLTE FDD Category 4; backward cellular support includes UMTS/HSPA+ and GSM/EDGE in the specified regional band plan.
InterfacesUSB 2.0 Type-A host/data/power; micro-SIM slot; two TS-5 external antenna sockets on the documented E3372 configuration; microSD function depends on model revision.
Downstream / upstreamHuawei specifies LTE Cat 4 up to 150Mb/s down and 50Mb/s up at 20MHz bandwidth. Supported HSPA+ peak is up to 42Mb/s down / 5.76Mb/s up; operator, signal and cellular band determine actual rates.
Telephone serviceCellular data stick, not a telephone/voice modem; it provides no handset audio, analog phone jack or guaranteed SMS service.
Provider compatibilityE3372h-153 documentation lists LTE FDD 800/900/1800/2100/2600MHz, UMTS 900/2100MHz and GSM 850/900/1800/1900MHz. Confirm local carrier bands, SIM size/APN, carrier lock and data-device approval for this exact variant.
Firmware / host compatibilityHuawei support provides region-specific software and guides. E3372 retail firmware may operate in HiLink/router-like or stick/serial modes; do not cross-flash firmware between h/s variants or carriers. OS/router host compatibility depends on driver and firmware mode.
Power and safetyUSB bus-powered at the host's USB supply voltage; no separate DC adapter. Use an undamaged compliant USB port, avoid covering the radio while operating, keep it dry and remove before transporting a computer.

Model-specific notes

Huawei's E3372 family name alone is insufficient for carrier compatibility: verify the full h-153 suffix, firmware mode, local frequency bands and SIM/network lock before use.

Manufacturer specifications and manual

  1. Huawei E3372 official specificationsManufacturer specification table for network classes, bands, peak rates and host interface.
  2. Huawei E3372h-153 official supportManufacturer support/download route for this exact regional variant and its quick-start documentation.
  3. Huawei E3372h-153 repair and service documentationManufacturer service portal; software, support and applicability may vary by country.