I just purchased two of these: SecurOMax HDMI Cable (8K, HDMI 2.1, 48Gbps) with Braided Cord, 6 Feet https://www.amazon.com/dp/B07KNRXGW4/ref=cm_sw_r_cp_api_i_7XkMDbVEM9JRG

That being said, now I’m doubting if these are legit. How do I validate them?