The webcam of the Inspiron takes acceptable pictures with a resolution of up to 1280x720 pixels. The WLAN module also provides the Bluetooth 4.0 functionality. We had a stable wireless signal in a 15 m (~50 ft) radius around our router and the transfer rates did not drop. The module is provided by Intel (Wireless-AC 7265) and supports the WLAN standards 802.11 a/b/g/n/ac. The Inspiron does not have an Ethernet port, so you can only use the WLAN module for Internet connections. The hinges are quite firm, so opening the lid with one hand requires some fiddling. Pressure on the back of the lid does not result in picture distortions. The torsion resistance of the base unit is decent, and it is only possible to twist the lid slightly.
It is only possible to dent the chassis at the center of the left edge. The build quality of the device does not reveal any issues and the same applies for the stability. A maintenance hatch is not available, but it is easy to lift the entire bottom cover. The top of the base unit is now darker (anthracite). Dell did change the chassis color: While the predecessor was entirely silver-gray, the successor Inspiron 15-7548 uses this color only for the lid. On the other hand, the materials are identical: The whole device is made of aluminum, the only exception is the bottom cover. At the same time, it is around 500 grams (~1.1 lb) lighter. The device gets slimmer towards the sides, so it actually appears much thinner. The chassis of the Inspiron is just 2.3 mm (~0.1 in) slimmer than the chassis of the predecessor.
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