We've seen several new mid-tower case releases around the concept of a pillarless front-left corner, which allows glass panels along the front- and left panels seamlessly merge, creating a better view of the hardware inside. Jonsbo is among the few case designers that have implemented a more perfect version of this concept—to use a single piece of glass that curves along the corner, to eliminate the edge between what would otherwise be two separate glass panels. The new Jonsbo TK-3, the case behind this concept, comes in two trims—black and white. It features a vertically-partitioned layout. The compartment on the left with the spacious motherboard tray, has no vertical expansion slots, but plenty of room for even the largest ASUS ROG Strix graphics card, as shown below.

The motherboard tray recesses toward the front of the tray, creating room for a liquid-cooling radiator and its fans, such that they don't get in the way of the graphics card. The left compartment (behind the motherboard tray), has plenty of crawlspaces behind the motherboard tray, to route your cables. The PSU bay is oriented sideways, directly behind the upper half of the motherboard tray; and a drive cage with two 3.5-inch bays is located below it. The entire left side-panel is perforated. Besides the side-facing 3x 120 mm vent that holds a 360 mm radiator, there are two additional such sets of 120 mm vents along the bottom- and top panels, making up the case's ventilation system. Front-panel connectivity includes two USB 3.2 type-A ports, and a type-C port, besides a 4-pole headset jack. The case measures 288 mm x 438 mm x 415 mm (WxDxH). The company didn't reveal pricing.