Here are the LTE 4G modems that are currently offered in the US Market. For now, only Verizon Wireless is offering LTE 4G USB modems to US consumers. However, AT&T and perhaps Sprint will also provide LTE 4G USB modems when the carriers launch their own 4G networks.
LG VL600 4G USB Modem

Design: Fixed Type A USB port with protective flip cover
Dimensions:3.88" (H) x 1.48" (W) x 0.58" (D)
Weight: 1.76 oz
Features: 4G LTE Mobile Broadband and Mobile Broadband (Rev. A) capable, Auto Connect, 2–way Text Messaging capable,
Operating System Support: Windows Vista (32/64–bit) (SP2), Windows XP (32–bit) (SP3), Windows 7 (32/64–bit), Mac OS 10.4 or higher
Included Accessories: VZAccess Manager (On CD including User Guides), USB Extension Cable/Clip Holster Accessory, Tips, Hints & Tricks Guide, Product Safety & Warranty Guide, Important Consumer Information Brochure, Radio Frequency Brochure
Verizon Wireless online store page: Click Here
Hands-on Video
Pantech UML290 4G USB Modem

Design: Fold–away, 180° rotating Type A USB connector
Dimensions: 3.5" (H) x 1.4" (W) x 0.6" (D)
Weight: 1.8 oz
Features: 4G LTE Mobile Broadband and Mobile Broadband (Rev. A) capable, Auto Connect,External Antenna Connector, 2–way Text Messaging capable
Operating System Support: Windows Vista (32/64–bit) (SP2), Windows XP (32–bit) (SP3), Windows 7 (32/64–bit), Mac OS 10.4 or higher
Included Accessories: VZAccess Manager (On CD including User Guides), USB Extension Cable/Clip Holster Accessory, Tips, Hints & Tricks Guide, Product Safety & Warranty Guide, Important Consumer Information Brochure, Radio Frequency Brochure
Verizon Wireless online store page: Click Here
Unboxing Video
