Question 1

What does the B Grade imply?  Cosmetic blemishes?

Accepted Answer

B grade refers to units that may have dents, chips, or scuffs on the body. The keyboard may be shiny or worn down and hair line scratches or scuffs may be on the screen. https://kb.newegg.com/Article/Index/12/3/?id=1372

Question 2

Does this pick up WiFi?

Accepted Answer

All configurations of the Latitude E5430 come standard with WiFi compatible wireless card.

This is straight from the stats page on the Dell website:
Wired Connectivity 
  + 10/100/1000 Gigabit Ethernet
Wireless LAN Options:
  + Intel® Centrino® Advanced-N 6205, Intel® Centrino® Ultimate-N 6300, Dell Wireless™ 1504 (802.11g/n 1x1), or Dell Wireless 1540 (802.11n 2x2)

Below are options that are available, though the Bluetooth might be included.
Mobile Broadband10 & GPS Options:
  + Dell Wireless 5630 Multi-mode HSPA-EVDO Mini Card (Gobi™ 3000) with A-GPS2 or Dell Wireless 5560 Single-mode HSPA Mini Card with A-GPS2
Bluetooth Option:
  + Dell Wireless 380 Bluetooth® 4.0

Question 3

Hello. What is the screen resolution of this laptop? Thank you.

Accepted Answer

1366x768

Brand	DELL
Series	Latitude
Model	E5430

CPU Type	Intel Core i5 3rd Gen
Processor Name	Intel Core i5-3230M
Number of Cores	Dual-core Processor

Dimensions (W x D x H)	13.78" x 9.45" x 1.18"-1.28"
Weight	4.50 lbs.

DELL Latitude 14.0" Intel Core i5-3230M 8GB Memory 128GB SSD Windows 10 Pro 64-Bit E5430

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Item#: N82E16834861149