Check the "MASTER" or "SLAVE" on the SATA converter board.
Connect to the power(SMPS) using power cable. (1st HDD - the main power cable, 2nd HDD - the sub power cable)
When you use two HDDs, HDDs should be same model and have same interface.
Connect with 
SVR-940, 450 specifications
The Samsung 450, also known as the SVR-940, stands out as an innovative high-definition television that merges advanced technology with user-friendly features. This model has garnered attention for its remarkable specifications that cater to the needs of contemporary consumers seeking quality and performance in their visual entertainment.One of the main features of the Samsung 450 is its impressive screen resolution. With a resolution of 3840 x 2160 pixels, it offers four times the detail of standard Full HD displays. This Ultra HD capability ensures that viewers enjoy a sharper, more detailed picture, making it ideal for watching movies, playing video games, or enjoying streamed content in an immersive format.
The SVR-940 utilizes Samsung's proprietary Quantum Dot technology, which enhances color accuracy and vibrancy. This technology produces a wider color spectrum and greater brightness levels, ensuring that the images on the screen are vivid and lifelike. Coupled with HDR (High Dynamic Range) support, the television can display deeper blacks and brighter whites, enhancing contrast and providing a more dynamic viewing experience.
Another significant characteristic of the Samsung 450 is its Smart TV functionality. With built-in Wi-Fi connectivity, users can seamlessly access a plethora of streaming services such as Netflix, Amazon Prime Video, and YouTube. The intuitive interface allows for easy navigation between apps, enabling viewers to personalize their entertainment options from a centralized home screen.
Audio performance is equally impressive, as the SVR-940 features Dolby Atmos sound technology. This immersive audio experience envelops the viewer, providing a theater-like atmosphere at home. The television’s sleek design not only prioritizes aesthetics but also optimizes sound clarity, ensuring that dialogues and sound effects are crisp and engaging.
In terms of connectivity, the Samsung 450 offers multiple HDMI ports, USB ports, and optical audio outputs, allowing for versatile connectivity with various devices such as gaming consoles, Blu-ray players, and sound systems. This flexibility ensures that users can easily integrate the TV into their home entertainment setups.
Overall, the Samsung 450, SVR-940 model is a compelling choice for anyone seeking a premium viewing experience. Its blend of high-resolution display, advanced color and sound technologies, and smart functionality create a television that meets the diverse demands of modern viewers. Whether for gaming, streaming, or regular broadcast viewing, this television is designed to impress and elevate home entertainment.