Comparison Huawei E8372h-153 vs Huawei E8278s

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	Huawei E8372h-153	Huawei E8278s
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all specs only differences
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Device type	USB modem	USB modem
Wi-Fi	Wi-Fi 3 (802.11g) Wi-Fi 4 (802.11n)	Wi-Fi 3 (802.11g) Wi-Fi 4 (802.11n)
Connected devices, up to	10	10
Connection
Communication generation	2G 3G 4G (LTE)	2G 3G 4G (LTE)
4G (LTE)	Cat.4 (150/50 Mbps)
Transmission technology	GPRS EDGE W-CDMA HSUPA HSDPA HSPA+ LTE	GPRS EDGE W-CDMA HSUPA HSDPA HSPA+ LTE
Ports	USB	USB
Features
External antenna connector	/2/	/2 pcs, LTE/
MIMO antenna connection
Memory card slot	/microSD, before 32 GB/	/microSD, before 32 GB/
SIM card slot
General
Dimensions		98х32х14.2 mm
Weight		50 g
Added to E-Catalog	april 2016	january 2015

4G (LTE)

The 4G (LTE) mobile connection speed supported by the modem.

All modern LTE equipment is assigned one or another category (Cat.3, Cat.4, Cat.6, Cat.7, Cat.9, Cat.12, Cat.13, Cat.16, Cat.18, Cat.19, Cat.20, Cat.22), on which the transmission speed directly depends. This paragraph specifies both this category and specific speed indicators, moreover, in two parameters — for reception and for transmission. The transmission speed is always much lower, but given the specifics of mobile Internet access, this is usually not critical.

Note that equipment with different speed categories will be quite compatible with each other, however, the throughput will be limited by the capabilities of the slower device. It is also worth saying that this paragraph indicates the theoretical maximum; practical amounts can be noticeably lower (depending on the quality of the network coverage and the features of specific electronics). However, a modem with a higher speed category will perform faster in fact.